As they say in the description: "2-talon locking plate can be combined with other supports (eg suction cup mount, headrest mount or wall mount" --- here would have to be replaced by "just" "eg". The Hama holder for the bike does not fit (2 claws / 4 claws system). Well with a drill and a 4mm drill bit, it can be made to fit. After that drill 3 holes and fix beautiful with 4 sheet metal screws. After that, it is perfect and has proven itself on the first bike ride with a 7 "tablet already .-)